Definition
Ameerega trivittata is a species of poison‑dart frog in the family Dendrobatidae. It is commonly referred to as the three‑stripe poison frog or tricolored poison frog.
Overview
Ameerega trivittata is native to the Amazon Basin, occurring in the lowland rainforest regions of Brazil, Colombia, Ecuador, Peru, and Bolivia. The species inhabits leaf‑litter on the forest floor and is typically found near streams or other moist microhabitats. It is diurnal and primarily terrestrial, although it may use low vegetation during breeding activities.
Etymology / Origin
The generic name Ameerega was established in 2006 when several former Epipedobates species were reassigned based on phylogenetic analyses; the name itself does not have a specific linguistic meaning beyond its taxonomic usage. The specific epithet trivittata derives from Latin: tri‑ meaning “three” and vittata meaning “banded” or “striped,” referring to the characteristic three longitudinal stripes on the frog’s dorsal surface.
Characteristics
- Size: Adults typically range from 20 to 30 mm in snout‑vent length.
- Coloration: The dorsal coloration is generally a bright orange‑red background with three dark longitudinal stripes running from head to rear. Ventral surfaces are often orange or yellow with occasional black spotting.
- Skin toxicity: Like other dendrobatids, A. trivittata sequesters alkaloid toxins from its diet of arthropods. These skin alkaloids provide a chemical defence against predators; however, the toxicity level is moderate compared to some other poison‑dart frogs.
- Reproduction: Breeding occurs during the rainy season. Males call from concealed sites, and females lay clutches of 5–20 eggs on moist leaf litter. After hatching, the male (or occasionally the female) transports tadpoles on its back to temporary aquatic pools where they complete metamorphosis.
- Behavior: The species is active during daylight hours, feeding on small insects, mites, and other invertebrates. Territorial calls are used to establish breeding sites.
Related Topics
- Genus Ameerega – a group of South‑American dendrobatid frogs that includes species such as Ameerega bassleri and Ameerega petersi.
- Poison‑dart frogs (Family Dendrobatidae) – a family of neotropical frogs known for their aposematic coloration and skin alkaloids.
- Amphibian conservation – many dendrobatids face threats from habitat loss, climate change, and the pet trade; A. trivittata is listed as “Least Concern” by the IUCN, but local populations may be impacted by deforestation.
- Alkaloid sequestration – the ecological process by which poison‑dart frogs obtain defensive chemicals from dietary arthropods.
References for the information above are drawn from peer‑reviewed herpetological literature, taxonomic databases, and the IUCN Red List.